White Widow is the most repeated name in any seed catalogue and, in ours, the largest family: the same selection comes in three versions, feminized, autoflowering and fast version. They share lineage and much of their character, but they do not behave the same way. In this guide we compare the three using the data on their product pages, so you can see what changes from one to another and which one fits your collection best.
One family, three behaviours
All three versions come from our own mother plants, selected and kept at our seed bank in Barcelona. The base is the feminized White Widow, whose documented cross is Widow Bilbo × Widow BCN: two Widow lines selected separately and brought together to fix the strain’s aroma and structure.
From there, what changes is what triggers flowering. The feminized version is photoperiod-dependent: it flowers when the light cycle changes. White Widow Auto carries ruderalis in its cross and flowers with age, regardless of the photoperiod. White Widow Fast sits in between: it is still photoperiod-dependent, but a ruderalis contribution in its ancestry shortens flowering without making it automatic.
The three versions side by side
| Feminized | Auto | Fast | |
|---|---|---|---|
| Genetics | Widow Bilbo × Widow BCN | White Widow × Ruderalis | White Widow (Widow Bilbo × Widow BCN) with a ruderalis contribution |
| Type | Photoperiod | Autoflowering | Photoperiod, shortened flowering |
| Declared THC | 18–23% | 15–20% | 15–20% |
| Reference cycle | 47–56 days of flowering | Flowers with age · 70–110 cm tall | 40–49 days of flowering |
| Reference yield (indoor) | 750–900 g/m² with a 600W LED | 675–810 g/m² (about 20 plants per 600W LED) | 675–810 g/m² with a 600W LED |
| Aroma | Earthy and spicy, with citrus, floral and pine hints | Intensely floral, with sweet-and-sour, earthy and woody notes | Earthy, with pine and a spicy touch |
These are catalogue figures declared for the parent lines, useful for comparing strains with each other; they are not a measurement of each seed nor a guarantee of results.
Feminized White Widow: the reference
This is the version that defines the family. Its genotype, 60% indica and 40% sativa, places it halfway between compact indicas and long-cycle sativas, and its declared THC range (18–23%) is the highest of the three. The trait that made it famous is still its visual signature: a dense, pale layer of resin over the bud and nearby leaves, the detail that gives the whole “white” family its name. It is the natural choice for anyone who wants the classic White Widow with the most complete aromatic profile.
White Widow Auto: independent of the photoperiod
The ruderalis contribution changes the plant’s logic: the switch to flowering depends on its age, not on hours of light. The product page describes a small to medium plant, 70 to 110 cm tall, with a well-defined main cola. Its aroma is the furthest from the rest of the family, an intense floral note that is unusual in the catalogue, and in late flowering it can show pink and purple hues depending on the phenotype and environment. This is the version for anyone looking for the White Widow lineage in a compact autoflowering format.
White Widow Fast: the shortest cycle
The fast version keeps the photoperiod behaviour of the feminized one but shortens flowering: 40–49 declared days versus 47–56, the shortest cycle in our whole fast collection. In exchange, its declared THC range (15–20%) is somewhat lower than the feminized version’s. In aroma, it concentrates the backbone of the line into three notes: earth in the background, pine lifting it and a spicy touch behind. It suits anyone who wants the classic feminized character on a faster cycle.
Which one fits your collection best?
- If you want the original White Widow and the highest declared THC: the feminized version.
- If you are interested in a compact autoflowering strain that does not depend on the photoperiod: the Auto.
- If you want the feminized character with the shortest cycle: the Fast.
- If you want to compare how the family behaves: all three together. Formats can be combined, and each version is available in single-strain packs of 6, 100 and 1,000 seeds.
The link with AK-74
White Widow is also at the base of another of our lines: AK-74, whose documented cross is AK-47 × White Widow. Compared with the earthy profile of the Widow family, AK-74 is fresh and fruity, with a 60% sativa and 40% indica genotype. Its AK74 Fast version declares 53–57 days of flowering and 21–26% THC.
To go deeper into the differences between the three seed types, see feminized, autoflowering and fast version: what’s the difference. And to see how other families in the catalogue compare, we have the same guide for AK-74, Critical Plus, Patagonia, Gorilla, Jack Herer, Blueberry, Total Cheese, Wendy, Sweet Madness and The Palmar.
Frequently asked questions
Do the three versions come from the same genetics?
Yes. All three come from the same selection of White Widow mother plants at our seed bank. The Auto and the Fast also include a ruderalis contribution, which makes the Auto autoflowering and only shortens flowering in the Fast.
Which one has the highest declared THC?
The feminized version, with an 18–23% range. The Auto and the Fast declare 15–20%. These are catalogue ranges for the parent lines, not measurements of each seed.
What is the difference between the Fast and the Auto?
The Fast is still photoperiod-dependent: it starts flowering when the light cycle changes, only with a shorter flowering period. The Auto flowers with age, regardless of the photoperiod.
Why is it called White Widow?
Because of the dense, pale, almost white layer of resin that covers its flowers. It is the trait that made it recognisable in the European scene of the 1990s and the one shared by all three versions.
Legal information
This article is for informational purposes and describes collectible genetic material; it does not constitute cultivation advice or a recommendation for use. Trikoma Seeds seeds are sold exclusively for collecting and genetic preservation. Check and respect the laws of your country before placing an order. Sale restricted to adults over 18.
